But, there is no "options" tab under "tools" for me and I'm not sure how to delete the cache. I am using firefox 21.0 on the "release update channel" and it is up to date. So, how can I make soundcloud work for me? AI would also like to play songs on bandcamp but this doesn't work because I need to install Adobe's latest flash player. m I giving up any privacy by fixing these 2 problems?

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.

I have had the same problem since the latest Adobe Flash update. I have the same problem in IE too. I also have the problem with some YouTube videos at times and a certain video at another website. These are ones I can remember and it didn't start until I updated Adobe Flash. Google Chrome uses it's own flash, so when I use that browser, no problem. So it must be Adobe Flash update being flawed. Maybe it can be rolled back to an earlier version? For doing that, try this link. I haven't fully check it out yet, just found it at the same time I came across this thread.